Human Evolution teeth

platytrrhines dental formula

NEW WORLD MONKEY. 2.1.3.3. 3 premolars 3 molars. (some have 2.1.3.2)

catarrhine dental formula

OLD WORLD MONKEY. 2 premolars and 3 molars, making a dental formula of 2.1.2.3.

Bilophodont

Refers to lower molars, in Old World monkeys, that have two ridges, one valley, four cusps. leaf eaters - shearing molars.

CP3 Complex

A dental adaptation seen in dimorphic species where the enlarged canines and premolars rub against one another each time the mouth opens and closes to "hone" or sharpen the tooth.

Mastication

Chewing

premolars

The teeth immediately behind the canines; used in chewing, grinding, and shearing food. The bicuspid teeth.

deciduous teeth

baby teeth, milk teeth

what are teeth reliable in

determining taxon, classification, primate/ skeleton/ fossil.

whats the hardest substance in the body?

enamel

Maxilla

upper jaw

Colobus Monkey

Bilophodont

Heterodont

Having different kinds of teeth; characteristic of mammals, whose teeth consist of incisors, canines, premolars, and molars.

diphyodont

Having two sets of teeth where one is replaced by the othe

dental attrition

Increased amount of wear or loss of tooth substance due to normal masticatory forces. -Wear and tear on teeth.

Tooth Combs & who has it

Lemurs and lorises. (Strepsirrhines) used for grooming & thus performing social function.. much like CP3 complex. -comprising a group of front teeth arranged in a manner that facilitates grooming, similar to a hair comb.

Bunodont Teeth

Low, rounded cusps to grind and mash up fruit - FRUIT EATERS

Crenulations

Wrinkled appearance to enamel on occulasal surface for SEED EATING. having a margin with small rounded teeth.

Gibbon, Chimpanzee, Orangutan, HUMAN

Y5

molars

a grinding tooth at the back of a mammal's mouth.

Incisors

a narrow-edged tooth at the front of the mouth, adapted for cutting.

canines

a pointed tooth between the incisors and premolars of a mammal, often greatly enlarged in carnivores.

Diastema

a spacing or gap between the teeth

Homodont

all of the teeth in the jaw are alike.

4 tooth types

incisors, canines, premolars, molars

Y-5 Molar Pattern

low molar pattern seen in great apes (orangutans, gorillas, chimpanzees and humans) - seen in apes and humans, the lower molar has 5 cusps and a fissure that forms a "Y" shap

Mandible

lower jaw

chewing muscles

masseter temporalis medial pterygoid lateral pterygoid